<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>12-22</title>
    <script src="../../js/js/12-22.js" type="text/javascript"></script>
</head>
<body>
<button onclick="demo()">测试</button>
<p id="lx">你好梁潇</p>
</body>
</html>
